ADAU1702 Datasheet | Analog Devices

Data Sheet Sigma DSP 28-/56-Bit Audio Processor with Two ADCs and Four DACs ADAU1702 Features 28-/56-bit, 25 MIPS digital audio processor 2 ADCs: SNR of 100 d B, THD + N of - 83 d B 4 DACs: SNR of 104 d B, THD + N of - 90 d B plete standalone operation Self-boot from serial EEPROM Auxiliary ADC with 4-input mux for analog control GPIOs for digital controls and outputs Fully programmable with Sigma Studio graphical tool 28-bit × 28-bit multiplier with 56-bit accumulator for full double precision processing Clock oscillator for generating master clock from crystal PLL for generating a master clock from 64 × f S, 256 × f S, 384 × f S, or 512 × f S clocks Flexible serial data input/output ports with I2S-patible, left-justified, right-justified, and TDM modes Sampling rates of up to 192 k Hz are supported On-chip voltage regulator for patibility with 3.3 V systems 48-lead, plastic LQFP APPLICATIONS Multimedia speaker systems MP3 player speaker docks Automotive head units Miniponent stereos Digital televisions Studio monitors Speaker crossovers Musical instrument effects processors In-seat sound systems (aircraft/motor coaches) GENERAL DESCRIPTION The ADAU1702 is a plete single-chip audio system with a 28-/56-bit audio DSP, ADCs, DACs, and microcontroller-like control interfaces. Signal processing includes equalization, crossover, bass enhancement, multiband dynamics processing, delay pensation, speaker pensation, and stereo image widening. This processing can be used to pensate for real-world limitations of speakers, amplifiers, and listening environments, providing dramatic improvements in perceived audio quality. Its signal processing is parable to that found in high end studio equipment. Most processing is done in full 56-bit, double precision mode, resulting in very good low level signal performance. The ADAU1702 is a fully programmable DSP. The easy to use Sigma Studio™ software allows the user to graphically configure a custom signal processing...